General description High-speed steel (HSS) step drill bit designed for drilling workpieces with a hardness of less than 25 mm. Ideal for materials such as carbon steel, sheet metal, insulation boards, PVC panels, and wood with a thickness of up to 5 mm. The drill bit features a titanium nitride coating for enhanced durability and longevity. Technical specifications Diameter range: 10-45 mm Material: High-speed steel (HSS) Coating: Titanium nitride Suitable for materials: Carbon steel, sheet metal, insulation boards, PVC panels, wood (up to 5 mm thickness) Usage The drill bit is perfect for home repairs and light jobs, including drilling holes in plastic, aluminum, copper, and various types of sheet metal. It can be cooled with water during operation to extend its lifespan. Other information Triangular shaft design prevents slippage in the power tool chuck. Double-edged design facilitates faster chip removal and easier particle escape.